Bathtub



FIG. 1 is a perspective view taken from the top, rear and right side ofa bathtub showing my new design;

FIG. 2 is a right side elevational view thereof the left side being amirror image of the right side shown;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front elevational view thereof; and

FIG. 6 is a perspective view taken from the top, front and left sidethereof.

The ornamental design for a bathtub, as shown and described.